KR910009442Y1 - Electricity boiling pot for medicine - Google Patents

Abstract

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Description

Control circuit of electric water dispenser

1 is a schematic external perspective view of an electric water bath for explaining the key arrangement state in the present invention.

2 is a block diagram of the present invention.

3 is a circuit diagram of the present invention.

* Explanation of symbols for the main parts of the drawings

1: Basic medicine body 2: Time reservation selection button

2 ': 30 minute display lamp 3: Super ash button

3 ': Chojaetang display lamp 4: Additional heating button

4 ': additional heating indicator lamp 5: power indicator lamp

6: cancel button 7: medicine container

8: display unit 9: power supply unit

10: overvoltage detection unit 11: heater driving unit

12: warning sound generation unit 13: function selection unit

14: overheat protection and safety cut-off circuit MC: microcomputer

BZ: Buzzer Q1-Q7: Transistor

IC2: Constant Voltage IC RY: Relay

SW1: Power switch Ya: Relay (RY) contact

The present invention relates to a control circuit of an electric medicine bath, and in particular, to automatically control the time reservation of the electric medicine bath, super ash heating, additional heating, insulation and overvoltage alarm function using a microcomputer.

The conventional electric water dispenser has a disadvantage in that its function is limited because time reservation is a mechanical timer, and the failure rate is high, and when the mechanical timer is installed inside the case, the volume of the water dispenser is large and the appearance is not beautiful.

The present invention is very easy to use the microcomputer to control the time-saving meeting time, such as heating, additional heating, warming function, etc. by using a micro computer to notify the overvoltage and overheating status by alarm sound immediately. The present invention relates to a control circuit of an electric water dispenser intended to provide convenience in use such as preventing unnecessary power consumption.

The control circuit of the electric water dispenser according to the present invention includes a function selector 13 for selecting a time reservation, a superheater addition heating mit cancel function as shown in FIG. 2, an overvoltage detector 10 for detecting an overvoltage input state, and When the medicine container is placed on the surface heater of the pot stand, the switch is connected and if the device is heated, the thermocouple switch is connected to connect the overheat prevention and safety cut-off circuit unit 14 to block the heating of the heater to the microcomputer MC. The display unit 8 which receives the corresponding signal from the microcomputer MC and displays the time for each function, and an operating tank that prevents the heater heating by turning off the temperature switch to heat the heater and to overheat the temperature above the warming temperature. The heater driving unit 11 and a warning sound generating unit 12 for notifying that the super ash heating by the time reservation is completed are configured.

Iwajal the circuit is shown in detail in Figure 3, it will be described in detail the embodiment of the present invention as follows.

Connect the display unit 8 and the power supply unit 9 to the periphery of the microcomputer MC, connect the overvoltage detector 10 and the heater driver 11, and generate a warning sound generator 12 and a function selector ( 13) is connected to the overheat prevention and safety cut-off circuit unit 14, and is built in the bath body (1) so that the function can be performed in accordance with the drug container (7) and the consumer selection operation, the drug body (1) On the front side, a user selectable function selection unit (la) is formed, and the reservation time selection button (2) for operating the execution unit and a 30-minute display lamp are provided so that the set reservation time can be displayed in units of 30 minutes. And the super ash button 3 and the super ash display lamp 3 '.

In addition, the additional heating button (4) and the additional heating indicator lamp (4 ') can be provided to increase the amount of heat as necessary and its means are displayed by the lamp for visual confirmation, the potential display lamp (5) and the cancel button (6) to make sure that the power is applied, and if necessary, to cancel all operations.

Referring to the operation state of the present invention configured in this way in detail based on the attached drawing 3 goes as follows.

When the power switch SW1 is turned on while AC power is applied to the power supply unit 9 and power is applied to the microcomputer MC, the reservation time selection button 2 is pressed in accordance with the reservation time.

Therefore, the signal is applied to the 30-minute display lamp 2 ', and the light is turned on. When pressed again, the display unit 8 displays the 1 hour of 30 minutes added, so the time is reserved for 3 to 12 hours and 30 minutes. It is possible to select a time, and the selected time is displayed on the display unit 8 so that the consumer can visually confirm.

When 2 seconds have elapsed after the time has been selected in this way, the setting of the time selection is completed, and the current time-lapse flow state is displayed on the display section 8 in a 0.5 second blinking period.

In the above reservation, when the time elapses from the selected initial display time, the time reduction indication is displayed on the display unit 8 in number by 30 minutes.

The heater driving unit 11 is operated when the display unit 8 displays a time period of 2 hours and 30 minutes, so that the heaters HP1 and HP2 are heated, and the heating operation is stopped when all of the reserved time elapses. The low signal is outputted to the terminal P11 of the microcomputer MC, and the alarm sound buzzer BZ in the alarm sound generation unit 13 is activated to generate an end sound indicating that the reheating of the super ash by the time reservation is completed. It will perform the warmth function.

And the description of the heating function of Chojaetang is as follows.

In FIG. 1, when the medicine container 7 is placed on the medicine body main body 1, since the power switch SW1 is piezoelectric, power is supplied to the ON state, and power is supplied to the microcomputer MC and the peripheral circuit. , next. When the power indicator lamp 5 lights up, the user selects and presses the super ash button 3.

When the super ash button 3 is pressed, the high signal is changed to a low signal at the terminal P16 of the microcomputer MC, and the super ash display lamp 3 'lights up and the display section 8 simultaneously for 2 hours and 30 minutes. The time is displayed, and the heater driving unit 11 is operated so that the heaters HP1 and HP2 start to heat up, and the current running time is erased in the display unit 8 in a period of 0.5 seconds.

After 2 hours and 30 minutes of heating is over, the end sound is generated and then the warming function is performed.

In the additional heating function, when the additional heating button 4 is selected in FIG. 1, the microcomputer MC decodes the corresponding button signal and displays the additional heating time from 10 minutes to 60 minutes on the display unit 8. When 2 seconds have elapsed after selecting the additional heating time, the additional heating time setting is completed, and the additional heating indication lamp 4 'flashes at 0.5 second intervals to indicate the progress of the current time. Is displayed on the display unit 8 in units of 10 minutes.

Then, after the required time for additional heating, it is returned to performing the warming function.

In the description of the thermal insulation function, the thermal insulation rate is set to be performed only for 1 hour. When the internal heat of the medicine container 7 becomes weak, a high signal is output from the terminal P12 of the microcomputer MC to relay RY. Since the contact Ya is turned on to drive the heater drive unit 11 to enter the thermal insulation, when the temperature exceeds the required temperature, the terminal P12, which is in a high signal state in the microcomputer MC, is disconnected. Since the low signal is changed again, the contact Ya is turned off to cut off the power supply of the heater driving unit 11, thereby stopping the heating.

At this time, the display unit 8 to indicate that the current state is performing the warming function medium Wow It appears to flash in a 0.5 second period alternately up and down, and after performing the warming function for 1 hour, only the power display lamp 5 which is the initial power-up state is switched to the on state.

Subsequently, the description of the overvoltage alarm function is based on the voltages of the resistors R24 and R25 in the overvoltage detector 10 in FIG. 2 when AC overvoltage (for example, 220V is input when the 100V is set) is applied to the apparatus. Since the transistor Q4 due to the distribution is turned on so that the voltage of the power terminal P21 of the microcomputer MC is changed from high to low state, the microcomputer MC drives the display unit 8 for the overvoltage alarm. In the display unit 8, the number "ㄹ ㄹ" is displayed, and at this time, the alarm sound generating unit 12 operates to generate a continuous alarm sound and at the same time cut off the power of all functions.

In addition, when the overheat prevention mit safety cut-off function is described, the power switch SW1 is short-circuited when the medicine container 7 is not placed in the medicine body main body 1, and therefore, all the power switches SW2 of the apparatus stand. (SW4) is also in an off state, and when the medicine container 7 is placed on the medicine body main body 1, the power switch SW1 is turned on so that AC power can be applied to the apparatus.

At this time, if the heating heat is overheated, the thermocouple switch (SW5) is turned on for the protection of the device to continue the circuit function, but only to block the heater (HP1) to prevent overheating.

As described above, the device of the present invention can solve the inconvenience caused in the conventional mechanical system by automatically performing time reservation, super ash heating, additional heating, thermal insulation, and overvoltage alarm functions by a microcomputer (MC) in the electric water dispenser. It is a very useful design that can provide convenience and high quality of the product.

Claims (1)

In the electric bath, the function selection unit 13 for selecting time reservation, super ash, additional heating and cancellation functions, the overvoltage detection unit 10 for detecting an overvoltage input state, and the power supply only when the medicine container 7 is placed. When the switch SW1 is connected and the device is heated, the thermocouple switch SW5 is connected to connect the overheat prevention and safety cut-off circuit unit 14 to the microcomputer MC to block heating and receive the corresponding signal. The control circuit of the electric bath machine characterized in that the display unit 8 for displaying the time for each function, the heater driving unit 11 for preventing heating, and the warning sound generating unit 12 for emitting a warning sound according to the time reservation is configured. .